Oil-water mixer for hot mill

Abstract

The invention discloses an oil water mixing device for a hot rolling mill, which includes a mixing pipe and a rolling oil injection pipe arranged on the mixing pipe; the mixing pipe includes a first mixing chamber which is provided with the rolling oil injection pipe and a pure second mixing chamber; the two mixing chambers are connected and communicated by a fast joint; the rear part of the first mixing chamber and the interior of the second mixing chamber are respectively provided with a group of liquid retaining piece components. The rolling oil injection pipe is arranged on the mixing pipe by an installation seat and a pressing cap, constituting a dismountable injection pipe; the lower side wall of the injection pipe is provided with a plurality of nozzles; the opening direction of each nozzle is reverse with the advance direction of the water flow. The oil water mixing device for the hot rolling mill of the invention has good emulsification condition and enables the oil membrane formed on the surface of the roller to keep uniform and stable.

Description

technical field [0001] The invention relates to hot rolling mill auxiliary equipment in the metallurgical smelting process, in particular to an oil-water mixing device for the hot rolling mill. Background technique [0002] With the maturity of rolling oil technology, hot-rolled strip mills and cold-rolled strip mills at home and abroad have adopted the rolling lubricant technology of oil-water mixed injection. The process is mainly to mix water and rolling oil in a certain proportion through a mixer, and then spray them onto the surface of the roll through a nozzle. Its purpose is mainly to provide a certain proportion of oil-water mixture for the roll surface of the working rolls of the rolling mill, so as to perform rolling lubrication on the working rolls, and finally form an attached oil film on the surface of the rolls to reduce the load on the rolls (reduce production energy consumption) and reduce the loss of the rolls , Reduce roll surface damage and strip surface ...

AI Technical Summary

Problems solved by technology

[0005] 1. The nozzle hole of the rolling oil injection pipe is large, causing the oil coming out of the injection valve to be columnar (such as figure 1 shown in 15), after mixing with water, the particle size of the oil is large

[0006] 2. The purpose of installing the rolling oil injection pipe on the mixer is to refine the oil particles and mix them with the water flow under pressure. However, due to structural reasons, the rolling oil injection pipe of the prior art will The oil first contacts the wall of the injection pipe, and then flows into the water, losing the effect of atomization

[0007] 3. The mixing effect is poor. When the rolling oil and water are mixed, the state is columnar. In addition, the structure of the mixer is unreasonable. Can not form a uniform oil film, so can not produce the desired effect

[0008] 4. Affect the stability of steel rolling, the formation of oil film is unstable, and the particle size is large, which will cause negative effects of slipping, scrap steel, and uneven wear of rolls

Images